Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint, idempotentHint and non-destructive behavior, so the description is not the only source. It still adds value by asserting 'requires no account access and generates no media' — the auth-free nature is not captured by the annotations, though the no-media claim largely restates readOnlyHint.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Three compact sentences, front-loaded with the core action before the domain list and the read-only guarantees. The supported-domain enumeration is longer than strictly necessary but is informative rather than padding.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a one-parameter, read-only loader with no output schema, the definition covers purpose, timing, and safety properties adequately. The remaining gap is that the returned 'instructions' format and any length or usage constraints are unspecified, but this is minor.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The single skillId parameter has 0% schema description coverage, but the enum itself enumerates all valid values. The description partially compensates by naming the supported domains (motion design, films, webpage videos, games, restaurant menu videos, news videos, architectural tours, podcasts), which loosely map to enum entries, but it never names the parameter or explains that one of these identifiers must be supplied.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource: 'Load the complete public instructions for a Sequencer skill.' An agent can distinguish this from most siblings, though it does not explicitly contrast with the close sibling get_sequencer_capabilities, leaving some ambiguity about which Sequencer-related tool to pick.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

'before using it' gives a timing cue, implying this is a prerequisite step prior to invoking a skill. However, there is no explicit when-not guidance and no reference to get_sequencer_capabilities or other discovery siblings, so the agent must infer the selection rule.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.